Add all global context into this file

Author: GiacomoPope

src/flint/flint_base/flint_context.pxd

@@ -9,3 +9,17 @@ cdef class FlintContext:
     cdef arf_rnd_t rnd
     cdef public bint unicode
     cdef public long _cap
+
+cdef FlintContext thectx
+
+cdef inline long getprec(long prec=0):
+    if prec > 1:
+        return prec
+    else:
+        return thectx._prec
+
+cdef inline long getcap(long cap=-1):
+    if cap >= 0:
+        return cap
+    else:
+        return thectx._cap

src/flint/flint_base/flint_context.pyx

@@ -68,3 +68,5 @@ cdef class FlintContext:
 
     def cleanup(self):
         flint_cleanup()
+
+cdef FlintContext thectx = FlintContext()